Filtering device

Abstract

The utility model provides a filtering device, which comprises a body part, which is provided with a liquid inlet, a first chamber, a circulation channel, a second chamber and a liquid outlet, the liquid inlet, the first chamber and the circulation channel are communicated in sequence, the second chamber and the liquid outlet are communicated with each other, the liquid inlet is used for being connected with a first water pipe, and the liquid outlet is used for being connected with a second water pipe; the filter plate is arranged in the first cavity and divides the first cavity into a third cavity and a fourth cavity which are independent from each other, the liquid inlet is communicated with the third cavity, the circulation channel is communicated with the fourth cavity, the filter plate is provided with a plurality of first filter holes, and the filter plate is used for filtering fluid in the third cavity; the filter cartridge is arranged in the second cavity, a plurality of second filter holes are formed in the side wall of the filter cartridge, the second cavity is communicated with the circulation channel through the filter cartridge, and the filter cartridge is used for filtering fluid flowing into the filter cartridge from the circulation channel. By means of the scheme, the problem that in the prior art, due to the fact that a filtering assembly is arranged in a water pipe, installation of the filtering assembly is not convenient to achieve can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a filtering device. Background Art

[0002] Scraper conveyors for coal mines play a vital role in the production and construction of coal mines. They are mainly used for coal transportation in thin or very thin coal seams, medium or thick coal seams and gently inclined coal seams in coal mines, such as blasting, general mining, high-grade general mining, fully mechanized mining and caving. In addition, it can also be used for transportation in heading tunnels and drifts.

[0003] When the above-mentioned coal mine scraper conveyor is in use, water is needed to cool the motor, and the water source needs to be transmitted from the ground to the underground. In some large wells, the length of the water pipe is hundreds of meters or thousands of meters. After long-term use, such water pipes will contain a large amount of impurities, such as water alkali, rust plaques, etc. During the water source transportation process, some impurities in the water pipe reach the underground with the water source. Cooling the motor with water mixed with impurities may damage the motor and affect the normal operation of the motor.

[0004] In the prior art, in order to reduce the influence of impurities in the water source on the normal operation of the motor, a filter assembly is usually arranged inside the water pipe to filter the water source in the water pipe. However, by arranging the filter assembly inside the water pipe, it is not convenient to install the filter assembly. Utility Model Content

[0005] The utility model provides a filtering device to solve the problem in the prior art that it is inconvenient to install the filtering assembly by arranging the filtering assembly inside a water pipe.

[0006] The utility model provides a filtering device, which comprises: a main body, which has a liquid inlet, a first chamber, and a circulation channel which are connected in sequence, the main body also has a second chamber and a liquid discharge port which are connected to each other, the liquid inlet is used to be connected to a first water pipe, and the liquid discharge port is used to be connected to a second water pipe; a filter plate, which is arranged in the first chamber, the filter plate divides the first chamber into a third chamber and a fourth chamber which are independent of each other, the liquid inlet is connected to the third chamber, the circulation channel is connected to the fourth chamber, the filter plate is provided with a plurality of first filter holes, and the filter plate is used to filter the fluid in the third chamber; a filter cartridge, which is arranged in the second chamber, the side wall of the filter cartridge is provided with a plurality of second filter holes, the second chamber is connected to the circulation channel through the filter cartridge, and the filter cartridge is used to filter the fluid which flows into the filter cartridge from the circulation channel.

[0007] Furthermore, the main body includes: a first box body and a partition arranged in the first box body, the partition divides the first box body into an installation cavity and a second cavity which are independent of each other in the vertical direction, a first installation port is arranged at one end of the installation cavity, a first connecting hole is arranged on the partition, and the installation cavity and the second cavity are connected through the first connecting hole; a second box body is provided with a first cavity and a liquid inlet, part of the second box body is passed through the installation cavity through the first installation port, a circulation space is provided between the second box body and the first box body, a second connecting hole is arranged on the side wall of the second box body, the second connecting hole is located in the installation cavity, the second connecting hole, the circulation space between the first box body and the second box body and the first connecting hole are connected in sequence to form a circulation channel.

[0008] Furthermore, the filter plate is detachably connected to the second box body, and the filter device further comprises: a limiting component, which is arranged between the second box body and the filter plate, and the limiting component is used to limit the position of the filter plate in the second box body.

[0009] Furthermore, a second mounting opening is provided at one end of the second box body, and the filtering device further comprises: a cover plate, which is detachably connected to the second box body.

[0010] Furthermore, the limiting assembly includes: a first limiting portion, which is arranged in the third chamber; a second limiting portion, which is arranged in the fourth chamber, and the filter plate is located between the first limiting portion and the second limiting portion, and the first limiting portion and the second limiting portion are respectively abutted against two sides of the filter plate to achieve positioning of the filter plate.

[0011] Furthermore, a through hole is provided at one end of the second box body, the bottom end of the second limiting portion extends into the second box body through the through hole and abuts against a side of the filter plate away from the first limiting portion, and the second limiting portion is threadedly connected to the through hole.

[0012] Furthermore, a plurality of filter cartridges are provided, and the plurality of filter cartridges are respectively communicated with the flow channels.

[0013] Furthermore, the filtering device also includes: a connecting main pipe, which is arranged in the second chamber, and one end of the connecting main pipe is connected to the circulation channel; multiple connecting branch pipes, one end of the multiple connecting branch pipes are respectively connected to the connecting main pipe, and the other ends of the multiple connecting branch pipes are respectively connected to a filter cartridge.

[0014] Furthermore, the first chamber is located above the second chamber, and the third chamber is located below the fourth chamber.

[0015] Furthermore, the third chamber is located below the fourth chamber, and the filter device further includes: a buffer portion, which is arranged in the third chamber and close to the liquid inlet, and the buffer portion is used to buffer the fluid.

[0016] By applying the technical solution of the utility model, the filter device can be arranged between two water pipes, wherein the first water pipe is connected to the liquid inlet of the filter device, and the second water pipe is connected to the liquid outlet of the filter device. When the filter device needs to be installed, the connection between the first water pipe and the liquid inlet and the connection between the second water pipe and the liquid outlet are respectively released, and then the filter device can be installed. When the filter device is used for filtering, the water of the first water pipe flows into the third chamber through the liquid inlet, and after the filter plate filters the water in the third chamber, the water source flows into the fourth chamber, and the water source of the fourth chamber flows into the filter cartridge in the second chamber through the circulation channel. The filter cartridge filters the water source in the circulation channel, and the filtered water source flows into the second chamber, and finally flows into the second water pipe through the liquid outlet. The water in the second water pipe cools the motor. In the traditional technical solution, the filter assembly is arranged inside the water pipe, which is inconvenient to realize the installation of the filter assembly. Compared with the traditional technical solution, the filter device can achieve secondary filtration of the water flowing out of the first water pipe, ensuring the filtering effect, and the filter device is arranged between the two water pipes, which facilitates the replacement of the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A cross-sectional view of a filter device provided by an embodiment of the utility model from one viewing angle is shown;

[0019] Figure 2 A cross-sectional view from another perspective of the filtering device provided by an embodiment of the utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Body part;

[0022] 101, liquid inlet; 1011, liquid inlet pipe;

[0023] 102, first chamber; 1021, third chamber; 1022, fourth chamber;

[0024] 103. Circulation channel;

[0025] 104, second chamber;

[0026] 105. Drainage port; 1051. Drainage pipe;

[0027] 11. First box body; 111. First installation opening;

[0028] 12. partition; 121. first communication hole;

[0029] 13. Second box body; 131. Second communication hole;

[0030] 20. filter plate; 201. first filter hole;

[0031] 30. filter cartridge; 301. second filter hole;

[0032] 40. Limiting assembly;

[0033] 41. a first limiting portion; 42. a second limiting portion;

[0034] 50. Cover plate;

[0035] 61. Connect the main pipe; 62. Connect the branch pipe;

[0036] 70. Buffer unit. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a filtering device, which includes a body 10, a filter plate 20 and a filter cartridge 30. The body 10 has a liquid inlet 101, a first chamber 102 and a circulation channel 103 which are connected in sequence. The body 10 also has a second chamber 104 and a liquid discharge port 105 which are connected to each other. The liquid inlet 101 is used to connect to the first water pipe, and the liquid discharge port 105 is used to connect to the second water pipe. The filter plate 20 is arranged in the first chamber 102. The filter plate 20 divides the first chamber 102 into a third chamber 1021 and a fourth chamber 1022 which are independent of each other. The liquid inlet 101 is connected to the third chamber 1021, and the circulation channel 103 is connected to the fourth chamber 1022. The filter plate 20 is provided with a plurality of first filter holes 201. The filter plate 20 is used to filter the fluid in the third chamber 1021. The filter cartridge 30 is disposed in the second chamber 104 . A plurality of second filter holes 301 are disposed on the side wall of the filter cartridge 30 . The second chamber 104 is connected to the circulation channel 103 through the filter cartridge 30 . The filter cartridge 30 is used to filter the fluid flowing into the filter cartridge 30 from the circulation channel 103 .

[0039] By applying the technical solution of the utility model, the filter device can be arranged between two water pipes, wherein the first water pipe is connected to the liquid inlet 101 of the filter device, and the second water pipe is connected to the liquid discharge port 105 of the filter device. When the filter device needs to be installed, the connection between the first water pipe and the liquid inlet 101 and the connection between the second water pipe and the liquid discharge port 105 are respectively released, and then the filter device can be installed. When the filter device is used for filtering, the water of the first water pipe flows into the third chamber 1021 through the liquid inlet 101, and the filter plate 20 filters the water in the third chamber 1021, and the water source flows into the fourth chamber 1022, and the water source of the fourth chamber 1022 flows into the filter cartridge 30 in the second chamber 104 through the circulation channel 103, and the filter cartridge 30 filters the water source in the circulation channel 103, and the filtered water source flows into the second chamber 104, and finally flows into the second water pipe through the liquid discharge port 105, and the water of the second water pipe cools the motor. In the traditional technical solution, the filter assembly is arranged inside the water pipe, which is inconvenient to install the filter assembly. Compared with the traditional technical solution, the filter device can realize secondary filtration of the water source flowing out of the first water pipe, ensuring the filtering effect, and the filter device is arranged between the two water pipes, which is convenient for replacing the filter device.

[0040] In this embodiment, the filter device further includes a liquid inlet pipe 1011 and a liquid discharge pipe 1051, wherein the liquid inlet pipe 1011 is arranged at the liquid inlet 101 and is used to be connected to the first water pipe, and the liquid discharge pipe 1051 is arranged at the liquid discharge port 105 and is used to be connected to the second water pipe. Such an arrangement can facilitate the communication between the first water pipe and the liquid inlet 101, and facilitate the communication between the second water pipe and the liquid discharge port 105.

[0041] In the embodiment of the present scheme, the main body 10 includes a first box body 11 and a partition 12 disposed in the first box body 11, and the main body 10 also includes a second box body 13. The partition 12 divides the first box body 11 into a mutually independent installation cavity and a second chamber 104, one end of the installation cavity is provided with a first installation port 111, and the partition 12 is provided with a first communication hole 121, and the installation cavity and the second chamber 104 are connected through the first communication hole 121. The second box body 13 is provided with a first chamber 102 and a liquid inlet 101, and part of the second box body 13 is penetrated in the installation cavity through the first installation port 111, and there is a circulation space between the second box body 13 and the first box body 11, and the side wall of the second box body 13 is provided with a second communication hole 131, the second communication hole 131 is a linear hole structure, and the second communication hole 131 is located in the installation cavity, and the second communication hole 131, the circulation space between the first box body 11 and the second box body 13, and the first communication hole 121 are sequentially connected to form a circulation channel 103. Such an arrangement enables the first housing 11 and the second housing 13 to be integrated together, and part of the second housing 13 is disposed in the installation cavity of the first housing 11, which can reduce the overall volume of the filtering device and improve the compactness of the structure of the device. In addition, modular assembly can be achieved during the assembly process, thereby improving assembly efficiency.

[0042] In the embodiment of this scheme, the first box body 11 and the second box body 13 are respectively cubic boxes, the volume of the second box body 13 is smaller than the volume of the first box body 11, and after the second box body 13 is inserted into the installation cavity, a circulation space is formed between the outer peripheral surface of the second box body 13 and the installation cavity.

[0043] The first box 11 and the second box 13 can be connected and fixed by fasteners or clamping, etc. A first seal is also provided between the first box 11 and the second box 13, and the first seal is used to seal the gap between the first box 11 and the second box 13.

[0044] Furthermore, in this embodiment, the installation cavity and the second chamber 104 are distributed along the height direction, the installation cavity is located above the second chamber 104, and the first installation port 111 is set at the top of the installation cavity. Such a configuration can facilitate the assembly of the first box body 11 and the second box body 13, and facilitate the water source flow channel 103 to flow into the filter cartridge 30.

[0045] Furthermore, the filter plate 20 is detachably connected to the second housing 13, and the filter device further comprises a limit assembly 40, which is arranged between the second housing 13 and the filter plate 20, and is used to limit the position of the filter plate 20 in the second housing 13. Such arrangement enables the filter plate 20 to be removed or installed from the second housing 13, facilitating the replacement and cleaning of the filter plate. By providing the limit assembly 40, it is possible to ensure that the filter plate 20 is correctly positioned in the second housing 13, and prevent the filter plate 20 from shifting during fluid flow or machine operation.

[0046] Furthermore, a second mounting port is provided at one end of the second box body 13, and the filtering device further comprises a cover plate 50, which is detachably connected to the second box body 13. The provision of the cover plate 50 can facilitate the cleaning of the filter plate 20 by the staff.

[0047] Specifically, the second mounting port is arranged at the top of the second box body 13, and the filter plate 20 is arranged horizontally in the second box body 13. Such an arrangement can further improve the convenience of cleaning the filter plate 20.

[0048] In the embodiment of the present solution, the position limiting assembly 40 includes a first position limiting portion 41 and a second position limiting portion 42. The first position limiting portion 41 is disposed in the third chamber 1021. The second position limiting portion 42 is disposed in the fourth chamber 1022, and the filter plate 20 is located between the first position limiting portion 41 and the second position limiting portion 42. The first position limiting portion 41 and the second position limiting portion 42 are respectively abutted against two sides of the filter plate 20 to achieve positioning of the filter plate 20. Such a configuration has a simple structure and facilitates positioning of the filter plate 20.

[0049] Further, a through hole is provided at one end of the second housing 13, and the bottom end of the second limiting portion 42 extends into the second housing 13 through the through hole and abuts against the side of the filter plate 20 away from the first limiting portion 41, and the second limiting portion 42 is threadedly connected to the through hole. In the embodiment of this scheme, the through hole is provided on the top surface of the second housing 13, and the second limiting portion 42 includes a limiting screw. Such a configuration can facilitate the installation and removal of the filter plate 20.

[0050] This solution does not limit the number of filter cartridges 30 .

[0051] In some embodiments of the present solution, one filter cartridge 30 is provided.

[0052] In the embodiment of this solution, a plurality of filter cartridges 30 are provided, and the plurality of filter cartridges 30 are respectively connected to the flow channel 103. Such a configuration can improve the effect of filtering the water source.

[0053] Specifically, the filtering device further includes a connecting main pipe 61 and a plurality of connecting branch pipes 62. The connecting main pipe 61 and the plurality of connecting branch pipes 62 are respectively arranged in the second chamber 104, one end of the connecting main pipe 61 is connected to the circulation channel 103, one end of the plurality of connecting branch pipes 62 is respectively connected to the connecting main pipe 61, and the other ends of the plurality of connecting branch pipes 62 are respectively connected to a filter cartridge 30. Such an arrangement can improve the convenience of connecting the plurality of filter cartridges 30.

[0054] In the embodiment of this solution, a plurality of first communication holes 121 are provided on the partition plate 12, each of the first communication holes 121 is connected to a corresponding connecting main pipe 61, and each connecting main pipe 61 is connected to two connecting branch pipes 62. Such a configuration can ensure that as many filter cartridges 30 as possible are installed in the second chamber 104, thereby improving the filtering speed.

[0055] Furthermore, the third chamber 1021 is located below the fourth chamber 1022. This arrangement allows impurities in the water source flowing into the third chamber 1021 from the liquid inlet 101 to be deposited at the bottom of the third chamber 1021 as much as possible, reducing the possibility of impurities entering the fourth chamber 1022 and improving the filtering effect.

[0056] Furthermore, a sidewall of the first installation cavity is provided with an avoidance hole for the liquid inlet pipe 1011 to pass through. A second sealing member is also provided at the avoidance hole for sealing the gap between the avoidance hole and the liquid inlet pipe 1011 .

[0057] In the embodiment of the present solution, the filter device further includes a buffer portion 70, which is disposed in the third chamber 1021 and close to the liquid inlet 101. The buffer portion 70 is used to buffer the fluid. After long-term use, impurities will be deposited at the bottom of the third chamber 1021. The provision of the buffer portion 70 can reduce the possibility of the water flow directly impacting the deposited impurities, reduce the situation where the impurities are impacted and float, and further improve the filtering effect.

[0058] Specifically, the buffer portion 70 includes a buffer block, the buffer block has an arc surface, the arc surface faces the liquid inlet 101, the axis of the arc surface is located in the direction of the arc surface away from the liquid inlet 101, and the length of the buffer portion 70 is greater than the diameter of the liquid inlet 101. In this way, the water flow from the liquid inlet 101 into the third chamber 1021 impacts the arc surface, and after the guidance and isolation of the arc surface, the water flows to the two ends of the arc surface of the buffer portion 70, achieving the effect of reducing the flow rate and diversion, and reducing the direct impact of the water flow on the impurities deposited in the third chamber 1021.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0061] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0064] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A filtering device, characterized in that: The filtering device comprises: The main body (10) has a liquid inlet (101), a first chamber (102), and a circulation channel (103) which are connected in sequence. The main body (10) also has a second chamber (104) and a liquid discharge port (105) which are connected to each other. a filter plate (20) disposed in the first chamber (102); the filter plate (20) divides the first chamber (102) into a third chamber (1021) and a fourth chamber (1022) that are independent of each other; the liquid inlet (101) is in communication with the third chamber (1021); the flow channel (103) is in communication with the fourth chamber (1022); the filter plate (20) is provided with a plurality of first filter holes (201); and the filter plate (20) is used to filter the fluid in the third chamber (1021); A filter cartridge (30) is disposed in the second chamber (104), and a plurality of second filter holes (301) are disposed on the side wall of the filter cartridge (30). The second chamber (104) is connected to the circulation channel (103) through the filter cartridge (30). The filter cartridge (30) is used to filter the fluid flowing into the filter cartridge (30) from the circulation channel (103).

2. The filtering device according to claim 1, characterized in that: The main body (10) comprises: A first box body (11) and a partition (12) arranged in the first box body (11), the partition (12) dividing the first box body (11) into a mutually independent installation cavity and a second cavity (104), one end of the installation cavity is provided with a first installation opening (111), the partition (12) is provided with a first communication hole (121), and the installation cavity and the second cavity (104) are connected through the first communication hole (121); The second box body (13) is provided with the first chamber (102) and the liquid inlet (101); part of the second box body (13) is inserted into the installation cavity through the first installation port (111); a circulation space is provided between the second box body (13) and the first box body (11); a second connecting hole (131) is provided on the side wall of the second box body (13); the second connecting hole (131) is located in the installation cavity; the second connecting hole (131), the circulation space between the first box body (11) and the second box body (13), and the first connecting hole (121) are connected in sequence to form the circulation channel (103).

3. The filtering device according to claim 2, characterized in that: The filter plate (20) is detachably connected to the second box (13), and the filter device further comprises: A position limiting component (40) is arranged between the second box body (13) and the filter plate (20), and the position limiting component (40) is used to limit the position of the filter plate (20) in the second box body (13).

4. The filtering device according to claim 3, characterized in that: A second mounting opening is provided at one end of the second box body (13), and the filtering device further comprises: A cover plate (50), wherein the cover plate (50) is detachably connected to the second box body (13).

5. The filtering device according to claim 4, characterized in that: The limiting component (40) comprises: A first limiting portion (41) is arranged in the third chamber (1021); The second limiting portion (42) is arranged in the fourth chamber (1022), and the filter plate (20) is located between the first limiting portion (41) and the second limiting portion (42). The first limiting portion (41) and the second limiting portion (42) are respectively abutted against two sides of the filter plate (20) to achieve positioning of the filter plate (20).

6. The filtering device according to claim 5, characterized in that: A through hole is provided at one end of the second box body (13), and the bottom end of the second limiting portion (42) extends into the second box body (13) through the through hole and abuts against a side of the filter plate (20) away from the first limiting portion (41), and the second limiting portion (42) is threadedly connected to the through hole.

7. The filtering device according to claim 2, characterized in that: A plurality of filter cartridges (30) are provided, and the plurality of filter cartridges (30) are respectively connected to the circulation channel (103).

8. The filtering device according to claim 7, characterized in that: The filtering device also includes: A connecting main pipe (61) is arranged in the second chamber (104), and one end of the connecting main pipe (61) is in communication with the circulation channel (103); A plurality of connecting branch pipes (62), one end of each of the connecting branch pipes (62) is connected to the connecting main pipe (61), and the other end of each of the connecting branch pipes (62) is connected to one of the filter cartridges (30).

9. The filtering device according to claim 1, characterized in that: The first chamber (102) is located above the second chamber (104), and the third chamber (1021) is located below the fourth chamber (1022).

10. The filtering device according to claim 9, characterized in that: The third chamber (1021) is located below the fourth chamber (1022), and the filtering device further comprises: The buffer portion (70) is arranged in the third chamber (1021) and is arranged close to the liquid inlet (101), and the buffer portion (70) is used to buffer the fluid.

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